Device and process for electronic monitoring of an adjustment drive in a vehicle

Abstract

Suggested are a device and a method for electronically monitoring an adjustment drive arranged in a vehicle, for which a second adjustment drive (17) is actuated by an electronic control unit (12) in dependence on a first adjustment drive (15) in order to ventilate the vehicle inside space. This reduces the risk of a faulty actuation of the closing force limitation as a result of pressure changes.

I claim: 
     
       1. An arrangement for reducing pressure acting on a moveable element arranged in a vehicle during closing of the moveable element which is controlled by an adjustment drive, comprising: a first adjustment drive connected to a first moveable element for opening and closing said first moveable element and responsive to a closing force limit to secure the first moveable element;   a second adjustment drive connected to a second moveable element for opening and closing the second moveable element, with said second moveable element being of the type which, when open, causes ventilation of the interior space of the vehicle;   an operating element for providing a output signal causing actuation of said first adjustment drive; and   electronic control means, responsive to the output signal from said operating element indicating closure of said first element, and to signals from said first and second adjustment drives, for actuating said second adjustment drive to open said second moveable element to reduce increased pressure acting on said first moveable element during movement of said vehicle.   
     
     
       2. An arrangement according to claim 1, wherein said control means causes actuation of the second adjustment drive in dependence on the position of the first adjustment drive (15). 
     
     
       3. An arrangement according to claim 1, wherein said control means causes the actuation of the second adjustment drive in dependence on an activation of the first moveable element. 
     
     
       4. An arrangement according to claim 1, wherein said control means causes the actuation of the second adjustment drive in dependence on the vehicle speed and the position of the first adjustment drive. 
     
     
       5. An arrangement according to claim 1, wherein the first moveable element is a sliding roof and the second moveable element is a vehicle window. 
     
     
       6. An arrangement according to claim 1, wherein the first moveable element is a vehicle window and the second moveable element is a sliding roof. 
     
     
       7. An arrangement according to claim 2, wherein the first moveable element is a sliding roof and the second moveable element is a vehicle window. 
     
     
       8. An arrangement according to claim 3, wherein the first moveable element is a sliding roof and the second moveable element is a vehicle window. 
     
     
       9. An arrangement according to claim 4, wherein the first moveable element is a sliding roof and the second moveable element is a vehicle window. 
     
     
       10. An arrangement according to claim 2, wherein the first moveable element is a vehicle window and the second moveable element is a sliding roof. 
     
     
       11. An arrangement according to claim 3, wherein the first moveable element is a vehicle window and the second moveable element is a sliding roof. 
     
     
       12. An arrangement according to claim 4, wherein the first moveable element is a vehicle window and the second moveable element is a sliding roof. 
     
     
       13. A method of reducing pressure acting on a moveable element arranged in a vehicle during closing of the moveable element which is controlled by an adjustment drive comprising the following steps: providing a first adjustment drive connected to a first moveable element for opening and closing the first moveable element and responsive to a closing force limit to secure the first moveable element;   providing a second adjustment drive connected to a second moveable element for opening and closing the second moveable element, with said second moveable element being of the type which, when open, causes ventilation of the interior space of the vehicle;   in response to a control signal from a control element for causing closing of said first moveable element during movement of the vehicle, and in dependence on a signal from the first adjustment drive, actuating the second adjustment drive to reduce increased pressure acting on the first moveable element during closure thereof, and thereby reduce a risk of an erroneous detection of the closing force limitation.   
     
     
       14. A method according to claim 13, wherein the actuation of the second adjustment drive occurs in dependence on the position of the first adjustment drive. 
     
     
       15. A method according to claim 13, wherein the actuation of the second adjustment drive occurs in dependence on the point of time for activating the control elements. 
     
     
       16. A method according to claim 13 wherein the actuation of the second adjustment drive occurs in dependence on the vehicle speed and the first adjustment drive.